/Engine/Source/Runtime/CoreUObject/Public/Misc/RedirectCollector.h
Called at the end of Package Save to record soft package references that might have been created by save transformations
void CollectSavedSoftPackageReferences ( [FName](API\Runtime\Core\UObject\FName) ReferencingPackage, const [TSet](API\Runtime\Core\Containers\TSet)< [FName](API\Runtime\Core\UObject\FName) > & PackageNames, bool bEditorOnlyReferences )